TABLE 4.

Effect of polyphenols on symptoms of depression¹

Authors	Positive effect: statistically significant	Positive effect: not statistically significant	Mixed results	No difference observed
Experimental
Sathyapalan et al. (22)		X
Bergman et al. (23)		X
Nina Estrella et al. (24)	X
Atteritano et al. (25)	X
Lopresti et al. (26)	X
Sanmukhani et al. (27)		X
Esmaily et al. (28)				X
Panahi et al. (29)	X
Yu et al. (30)	X
Ibero-Baraibar et al. (31)	X
Pribis (32)	X*	X
Hirose et al. (33)	X
Mirghafourvand et al. (34)				X
Kamalifard et al. (35)	X
Davinelli et al. (36)	X
Kazemian et al. (37)	X
Chang and Chen (38)	X
Observational
Hintikka et al. (39)	X
Niu et al. (40)	X
Chen et al. (41)	X
Ruusunen et al. (42)	X
Li et al. (43)			X
Lucas et al. (44)	X
Feng et al. (45)	X
Feng et al. (46)	X
Omagari et al. (47)	X
Pham et al. (48)	X
Yu et al. (49)	X
Li et al. (50)	X
Chang et al. (51)	X
Su et al. (52)		X
Chan et al. (53)	X
Navarro et al. (54)	X
Miyake et al. (55)	X
Yu et al. (56)			X
Godos et al. (57)	X
Mofrad et al. (58)	X

¹X, study contains this item.

^*Only significant in males.